Answer:
those quantity which are measured and expressed on mathematical process is called physical quantity
Which is most likely the length of a student’s textbook?
30 millimeters
30 centimeters
30 decimeters
30 hectometer
Tarzan swings back and forth on a
vine with a period of 7.27 s. How
long is the vine?
(Unit = m)
Answer:
Considering Tarzan as a point mass at point L and using the equation for a simple pendulum:
P = 2 pi (L / g)1/2
P^2 = 4 pi^2 L / g
L = g P^2 / (4 pi^2) = 9.8 m/s^2 * 7.27^2 s^2 / (4 pi^2) = 13.1 m
Answer: 13.1
Explanation:
A window in a room is open. The next day, the temperature of the room has increased, but the pressure of the air has stayed the same.
State and explain what has happened to the mass of air in the room
Answer:
Explanation:
Hey Jinnin! It's Li Aing here. TELL ME WHEN YOU GOT THE ANSWER
find the difference between infectious agents and diseases
Answer:
A disease is a disorder in the function of the human body where as infectious agents are organisms that cause diseases
1.How many significant digits are in 101,407,063?
Answer:
There are 9 significant digits in 101,407,063.
Explanation:
Significant figures are the digits of a number that are meaningful in terms of accuracy. The include any non-zero digit, zeros between non-zero digits, and trailing zeros only when there is a decimal point.
Fatima is watching her pet cat, Winter, napping in the sun. Fatima is curious about the heart rate of Winter when she is napping, so she develops this scientific question: Does a cat’s heart rate change while it is napping
We have that for the question, Does a cat’s heart rate change while it is napping?
Cats heart rate do not increase while napping.
The range of heart beat of a cat is 140 and 220 bpm
From the Question we are asked
Does a cat’s heart rate change while it is napping.
The answer is NO
Cats heart rate do not increase while napping. Cat have a normal heart beat maximum of 220 beats per minute consistently.The range of heart beat of a cat is 140 and 220 bpm
Therefore
There is something with a cat with heart rate above this number.
For more information on this visit
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How do people participate in tourism
A basket contains 7 white cats and 15 black cats. What is the ratio of the number of white cats to the number of black cats?
What is the difference between a scientific theory and a scientific law?
Theories combine several laws into one.
Theories are upgraded into laws once they are proven.
Laws use mathematical explanations and theories do not.
Laws describe what happens but theories explain why or how.
Answer:
laws describe what happens but theories explain why or how
A diagram shows how gravity on Earth works on an object located in different spots in a seaside community. Where is gravity between Earth and an object the strongest?
A when the object is on the highest branch of a pine tree
B when an object is at sea level
C when the object is on top of a nearby mountain
D when the object is on top of a telephone pole
Answer:
B) when an object is at sea level
Explanation:
Answer:
When the object is at sea level
Explanation:
Which is most likely the length of a student’s textbook?
30 millimeters
30 centimeters
30 decimeters
30 hectometers
A bus traveling at 30 m/s accelerates at a constant rate of 2.4 m/s2 over a distance of 60 m.
What is its speed after accelerating?
Answer:
Speed is 34.5 m/s
Explanation:
From the third equation of motion:
[tex]{ \boxed{ \sf{v {}^{2} = {u}^{2} + 2as}}}[/tex]
v is final velocity, u is initial velocity, a is acceleration, s is displacement.
substitute:
[tex] {v}^{2} = {30}^{2} + (2 \times 2.4 \times 60) \\ {v}^{2} = 900 + 288 \\ {v} {}^{2} = 1188 \\ {v} = \sqrt{1188} \\ v = 34.5 \: m {s}^{ - 1} [/tex]
If a car's initial velocity is 24 m/s E, and 3 seconds later the car's
velocity is 12 m/s E, what is the acceleration of the car during those
3 seconds?
Please find the attached photo for your answer. Hope it helps..
Extra Points because there are three questions.
1. An object goes from 20 m/s to 5 m/s in 1.2 seconds. What is the acceleration of the object?
a=vf-vi/t
2. What is the difference between distance and displacement? What is the difference between mass and weight?
3. What is the force necessary to accelerate a 40 kg object to 6 m/s/s?
F=ma
2. The convex mirror shown below has an object placed 15cm in front of it. An image is formed 35 cm
from the mirror. What is the nature of the image? Calculate the magnification of the image and the focal
length of the mirror.
Answer:
m = image distance/object distance
m=35/15=7/3
f=uv/(u+v)
35*15/(35+15)
f=10.5cm
us
Calculate the answer to the correct
number of significant digits.
15.3
+ 1.285
Answer:
15.3
+1.285
---------------
Answer = 16.585
Part G
Based on your observation of the Tracker videos and the calculations of average vertical velocity and acceleration,
• Why do you think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second?
• What can you say about your earlier prediction about which ball will land first? If your hypothesis was wrong, can you propose an alternate
rationale for the observed results?
Answer: I think the vertical acceleration values are not equal to the theoretical acceleration due to gravity, -9.81 meters/second2 due to the gravity force and maybe the drag due to air resistance.
Explanation: About my earlier prediction about which ball will land first, I can say that my hypothesis was right, but not quite because I calculated the average vertical acceleration, where the time period is t = 0.10 second to t = 1.00 second, the results were different. If the result were maybe right or close to the I would have said that my hypothesis was correct.
How can you decrease the amount of energy an object has?
Answer: Hello There!...............
You decrease the kinetic energy by either stopping the object and let it rest (which would give it potential energy) or changeing the slope.
Explanation:
Mark me brainest please. Hope this helps. Anna ♥
Depending on the sort of energy involved, you can use a variety of techniques to reduce the quantity of energy an object contains. To slow motion in mechanical systems, you can add friction or resistance, which turns kinetic energy into heat.
When dealing with thermal energy, you can place the object in a cooler environment, which will enable it to transmit heat and cool down. It is possible to lessen an object's potential energy by changing its height or location within a gravitational field. Reactions that release energy can dissipate chemical energy. These strategies essentially entail aiding energy transfer or conversion to a less energetic state, hence lowering the object's overall energy content.
To know more about potential energy, here
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Can you answer this math homework? Please!
[tex]\large \mathfrak{Solution : }[/tex]
Average speed :
[tex] \boxed{ \dfrac{distance \: \: covered}{total \: \: time \: \: taken} }[/tex][tex] \dfrac{100}{8} [/tex][tex]12.5 \: \: m/s[/tex]The horizontal (flat) line on a Distance - time graph shows that the body is at rest because the value of Distance (on y - axis ) is same for increasing time ( on x - axis ), it basically shows that the object is at the same position with the change in time.
therefore, correct option is :
[tex]a. \: \: the \: \: object \: \: is \: \: not \: \: moving[/tex]1. A body has a velocity of 72 km/hr. Find its value in m/s.
72 Km/hr
= 72000 m/ 60×60 s
= 72000 m/ 3600 s
= 20 m/s
Answer is 20 m/s.
Hope it helps! Please do comment
True or false: it would take 100 years on a space shuttle to reach the closest galaxy
What does the k in kW stand for
kW=kilowatt
k=kiloW=Watt[tex]\boxed{\sf 1kW=1000W}[/tex]
Or.
[tex]\\ \sf\longmapsto 1kilowatt=1000watts[/tex]
Show the relationship between linear expansivity and superficial expansivity
a washing machine of 46 ohm draws a current of 5A. Determine the power rating of the washing machine
Explanation:
P = V .I
from ohms law
V = I.R
P = I^2 .R
= 25 × 46 =1150 watt
HELP ME!!! Explain why an object moves if the action-reaction forces are equal.
Answer:
explanation is below
Explanation:
Equal and opposing forces acting on the same object are referred to as balanced forces. That is why they cancel each other out. Action-reaction forces do not cancel out because they are equal and opposite forces acting on different objects. In fact, they frequently cause movement.
Balanced forces are equal and opposite forces that act on the same object. That's why they cancel out. Action-reaction forces are equal and opposite forces that act on different objects, so they don't cancel out. In fact, they often result in motion.
I hope this helps!
what is a mechanism?
A mechanism is what is responsible for any action or reaction. Machines are based on the idea of transmitting forces through a series of predetermined motions. These related concepts are the basis of dynamic movement.
What is time dilation? Is that a thing only in the movies? I need a good explanation that is simple enough for me
A wheelbarrow of mass 20 kg accelerates from rest and reaches speed of 10m/S2 in 5 seconds.its force?
Answer:
[tex]\boxed {\boxed {\sf 40 \ Newtons}}[/tex]
Explanation:
We are asked to find the force of a wheelbarrow. According to Newton's Second Law of Motion, force is the product of mass and acceleration.
[tex]F= \ m \times a[/tex]
1. Calculate AccelerationThe mass of the wheelbarrow is 20 kilograms. We are not given the acceleration, so we must calculate it using the following formula.
[tex]a= \frac{v_f-v_i}{t}[/tex]
The wheelbarrow starts at rest or 0 meters per second (initial velocity) and accelerates to reach 10 meters per second (final velocity) in 5 seconds (time).
[tex]v_f=[/tex]10 m/s [tex]v_i=[/tex]0 m/s t= 5 sSubstitute these values into the formula.
[tex]a= \frac{ 10 \ m/s-0 \ m/s}{5 \ s}[/tex]
Solve the numerator.
[tex]a= \frac{10 \ m/s}{5 \ s}[/tex]
Divide.
[tex]a= 2 \ m/s/s[/tex]
[tex]a= 2 \ m/s^2[/tex]
2. Calculate ForceNow we know the mass and acceleration of the wheelbarrow
m= 20 kg a= 2 m/s²Substitute the values into the force formula.
[tex]F= 20 \ kg \times 2 \ m/s^2[/tex]
[tex]F= 40 \ kg*m/s^2[/tex]
Convert the units. 1 kilogram meter per square second is equal to 1 Newton, so our answer of 40 kilogram meters per square second is equal to 40 Newtons.
[tex]F= 40 \ N[/tex]
Answer:
40 N
Explanation:
We know that
F = ma
and
a = (v - u)/t
So,
F = m(v - u)/t
F = 20(10 - 0)/5
F = 20(10/5)
F = 20(2)
F = 40 N
Verdah, Hetav and Dhinesh are undertaking an investigation into the motion of wooden blocks in their Physics class. Their aim is to determine the effect that mass has on the horizontal motion of the wooden block across a table.
Verdah suggests that they use a launcher to give both blocks the same initial velocity and that they use the same table for each trial.
The blocks are made from the same wood but have different masses. The mass of block A (m1) is twice the mass of block B (m2). The coefficient of friction between the blocks and the table is u.
A. Derive a mathematical expression that the students could use to find the distance block A travels after it leaves the launcher. Upload a copy of your HANDWRITTEN working clearly identifying all equations and constants used in your derivation. Make sure your name is visible next to your working.
Answer:
u can find answer in quora
Explanation:
1.) What is the key difference between mass and weight?
A )Mass is measured in Newtons
B )Weight is measured in grams or kilograms
C ) Weight is equal to mass x gravity
2.) In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) Both solids and liquids have the same amount of thermal energy
3.) A mixture is...
A) a pure substance
B) at least two substances chemically combined
C) at least two substances physically combined
4.)In terms of particles, what is the difference between a liquid and a solid?
A) a liquid has more thermal energy than a solid
B) a solid has more thermal energy than a liquid
C) both solids and liquids have the same amount of thermal energy
Answer: C, A, C, A
Explanation:
I apologize if incorrect. I answered these to the best of my abilities, please feel free to let me know if they were correct or incorrect.
